Head-gate.



PATENTED OUT. 2,1906. G. W. DURBROW.

HEAD GATE.

APPLIOATON FILED NOV.8.1904.

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. PATENTED OCT. 2, 1906. G. W. DURBROW.

HEAD GATE.

APPLIUATLON FILED Nov..19o4.

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PATENTBD 00T. 2,1906.

G. W, DURBROW.

HEAD GATE. APPLIOATIONVHLED No v.a,19o4.

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lUNITED STATES PATENT OFFICE.

GEORGE W. DURBROW, OF INDIO, CALIFORNIA, ASSIGNOR TO DURBROW FILTRATION COMPANY, OF YUMA, ARIZONA TERRITORY, A CORPORA- TION OF ARIZONA TERRITORY.

HEAD-GATE.

specification of Letters Patent.

Application led November 8, 1904. Serial No. 231,830.

T0 all whom, t may concern:

Be it known that I, GEORGE W. DURBROW, a citizen of the United States,residing at Indio, in the county of Riverside, State of California, have invented new and useful Improvements in Head-Gates, of which the following is a specification.

This invention relates to head-gates designed 'for use in irrigation systems or for municipal or domestic water-supply systems,

and is adapted to remove objectionable por- Another obect of the invention is to pro-v vide for readi y getting rid of accumulations which may form at the head-gate.

Other advantages of the invention will appear from the-following description.

This invention includes a head-gate comprising a box open at two sides and a filter composed of one or more filter-sections interposed between said open sides. Preferably the filter is open at the bottom side and at one of the lateral sides, and usually it is also open at the top side; but for all practical purposes it is immaterial whether the top sidefbe open or closed, as the water never rises to the same or above the tops of the lateral sides. A ydesirable construction vconsists in submergng the open bottom side of the head-gate in the stream fromI which water is to be drawn and also submerging in said stream filtering material interposed between said open sidesthat is to say, between the open inlet side and the open outlet side.

The accompanying drawings illustrate the invention. y

Referring to the drawings, Figure 1 is a plan view of the head-gate. Fig. 2 is a section taken on line X2 X2 in Fig. l, illustrating the head-gate in place in the main canal or river and at the head of the ditch. Fig. 3 is a section on line X3 X3 in Fig. 1. Fig. 4 is a plan view showing a modified form ofthe head-gate, in which the strata of ltering material are disposed in vertical planes.

Patented oct..2,.19oe.

5 is a front elevation of the form of head-gate shown 1n Fig. 4. Fig. 6 is a section on line Xi X6 in Fig. 5. Fig. 7 is a cross-section similar to Fig. 2, illustrating a form slightly modified from that shown in Fig. 2, the view being taken on line X7 X7 in Fig. 8.

Fig. 8 is X a plan view, part being'broken away, Of the ,t

form shown in Fig. 7.

In the preferred formof this inventionthe head-gate is constructed with one or more cages containing filtering material, as gravel strata. different grades of gravel or other filtering material may be employed in the respective cages, varying, for instance, in the coarse If more than one cage is employed,

cage from one-half-inch mesh to one-,six-4 .teenth-inch mesh gravel in the finer cage.l

The coarse cage is so. arranged asto first receive the water as it enters the filter, the in- .termediate cages, if any, being arranged ac- .clording to their respective orders of fineness, .the finest cage being. that through. which the' .water last passes. `Each cage for the gravel or other filtering material is preferably .formed of sheets of perforated galvanized iron or of screens or of other foraminous lmeans for inclosing and keeping the respective layers of gravel separated. A small space- .for example., .of about one inch width- .is preferably provided .between each two ..cages, which will allow a certain percentage.

of water to flow out of the filter and carry out the sand, soil, or silt and prevent it fromcollecting in the head-gate. .This flow may be .continuous or by means of a gate or gates .may be made intermittent.

is preferably constructed with filter-sections arranged separately, so that any of the sections may be taken out ofthe head-gate when repairs are necessary. Each ca e of the head-gate is placed under the sur ace of the water, preferably with the gravel strata inlclined from the horizontal, .the head-gate being located where the .ditch joins the main canal or supply-stream and being so arranged that the water from the supply-stream or. main canal passes into the headfgate at the bottom and first throughutlie coarse-gravel layer and up through the intente-,ning gravel layers, if any, thence out through.-,tl;1,e .finest layer of gravel,if .any, intov the.,ditch,;prov

The head-gate IOOA gFig. 2.

vision vbeing made for preventing" the water of the main supply-canal from entering the `ditch except by passing through the filter.

Referring to Figs. 1 and 2, 1 designates the ditch, which is separated from the main canal 2 by a bulkhead 3, the sides of which are eX- tended to form side walls 4. 5 is an end wall joining the side walls 4, the side walls 4 and en'd wall, -as well as the bulkhead, being supported by uprights 6, which may be driven into the bottom of the stream, as shown in 'dicated at 12 in Fig. 2,) and an open lateral side, (indicated at 1 in Fig. 1,) while the filtering material is inter-posed between said sides,

as will hereinafter more fully appear.

The

,'uprights 6, which lie on the upstream side of 'mally closed by vertical rgates 21..

the head-gate, support a cross-beam 7, while 'the uprights '6 on the 'downstream side of the head-gate support a cross-beam 8, which is arranged slightly 'lower than the cross-beam '7. Resting upon the beams 7 and 8 'are three lower frames 9, each of which `comprises side strips 10, end strips 11, and three intermediate strips v12, the strips being rigidly fastened :together and forming a rectangular frame. Upon the top of'ea'ch frame 9 a wirescreen cage -13 is provided, and contained 'within each 'cage is a 'layer of coarse gravel 14. A series vof frames 15, each of which is constructed similarly to the frame 9, rest upon the gravel-cages 14, whilecages of finer ving thus separated. by screens and frames,

spaces are formed between the strata which have 'a `depth equal to the thickness of a "frarne lOn the upstream'side the walls 4 are provided with openings 20, which are nor- The downstream side ofthe head-'gate is also lprovided With'op'enings 22 and is preferably supplied with vertical `gates 23, which are constructed similarly to rvthe gates on the up- "strea'm side. Gates 21 'and 23 are adapted vto ,'cover or expose substantially the 'entire up- 's't'ream and'downstream'sides of the filter and lcontact with the ends of cages 14, 16, and 18 when lclosed to cause all the vwater to pass transversely through said cages.

In use the water from the supply-stream percolates up through the strata of gravel,

and its velocity is thereby decreased, Ithe sand* y It is thus seen that in this instancev the head-gate consists in a boX having 4lateral fsides or walls 3 4 5, an open bottom side, (in- I 5 being precipitated and carried on downstream, and as the water passes through the headegate it may deposit sand, silt, or soil in the spaces between the cages, and when the gate is left open such material will work its way down the spaces between the cages to the downstream end of the head-gate and pass out through the openings 22. The water having thus been freed from sand and other sediment passes from the uppermost layer of fine gravel into the ditch. The head gate thus arranged continually cleans itself while in operation 5 but if it should become clogged from any cause the .gates 21 may be opened, which will allow the stream to rush through the spaces between the 'gravel strata, and the rapid current will quickly clean out the spaces between the strata, or in practical operation both gates 21 and 23 may be normally kept closed, as shown in Figs. 2 and 7, except at intervals, when both may be opened for washing out the sediment. The strata lof gravel are preferably `arranged on an incline, as shown, so that the lhead-gate will the more readily clear itself of the deposits when in use. Although some water which passes into the head-gate does no'tget into the ditch, still a large percentage of it passes rthrough the head-gate and. into the ditch, the reinainder serving to carry out the deposits. If desired, 'a further ltering material, suchas burlap or cheese-cloth, may be used.

In Figs. 7 and 8 I have shown `a filter con structed in sections and strips of `burlap 1arranged over the sections respectively, each strip vbeing held in place by rollers 24, `carried on frames 25, the frames 25 also having wire screens 26 for `holding the burlap in place. The burlap passes from a supply-roll 27 Aover a roller 28, mounted on standards 29, thence down under a roller 24, over the gravel strata and thence up, being wound on a `reel 30, carried by standards 31. The reels 27 and f3() may be provided with suitable handles 32. The reel 27 stands considerably to one side'of the head-gate, so that a considerable length of 'the burlap lies in a horizontal position, which disposes it most conveniently for cleaning, for instance, by means of Ea hose. Thus, by employing strips 'of suflicien't'llength part of the-strip may be cleaned while the rest is in use. Thus the operation of the reeldoes vnot 'have to be stopped whenever `itis desired to clean the burlap. In vthe presen-t vembodiment the filter is formed vin three sections,

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(designated A, B, and 0,) and each section filtering material are open and that the bottom side, as indicated at 16, is also open. Referring particularly yto Fig. 6, the gravel strata, with their frames, are constructed similarly to the form shown in Fig. l, except that the edges of the frames rest upon the beams 35 and the bottom of the frames are open, so that water from the supply-stream 2 passes up into the gravel, thence out into the ditch l. In order to protect the head-gate, a line of piles mayl be driven into the bed of the stream above the head-gate, which will not obstruct the flow of water, but which will divert logs or other drift.

IVhat I claim is- 1. A head-gate comprising a box open at two sides and a filter composed of one or more filter-sections interposed between said open sides, suitable means for normally causing the water to pass through the sections one after the other, and means for allowing the water to fiow in another direction through the sections when desired.

2. A head-gate comprising a box open at two sides and a filter composed of sections of filtering material interposed between said open sides, means for normally causing the water to pass through the sections in order, and means for allowing the water to flow in another direction along the line of the sections when desired.`

3. A head-gate comprising a box open at the bottom and at another side and provided with filtering material and cages of netting retaining the said material in sections intact interposed between said open bottom and other side, means for supporting the cages and providingspace's between the cages, and vertical gates adapted to contact with the ends of said cages to close or expose substantially the entire upstream and downstream sides of the filter.

4. A head-gate comprising a box open at two sides and provided with filtering material, cages of netting retaining the filtering material in sections intact interposed between said open sides, means for supporting the cages and providing spaces between the cages, means for causing the water to pass sequentially through the sections when filtering, and means for allowing the Water to pass in other direction when desired to clean the filter.

5. A head-gate comprising a box open at two sides and provided with filtering material, cages of netting retaining the filtering material in sections interposed between said open sides, frames supporting the cages, the frames being arranged substantially parallel to each other but inclined -to thehorizontal, the lower end of the sections being arranged on the downstream side.

6. A head-gate comprising a box open at the bottom and another side and provided with a filter composed of sections of filtering material, cages of netting retaining the respective sections intact interposed between said open bottom and other side, frames supporting the sections, a suitable structure for supporting the frames and for inclosing the sides of the sections, and vertical gates adapted to close or expose the upstream and downstream sides of the filter, said gates when closed being in contact with the ends of said cages.

7. A head-gate provided with a filter composed of sections of ltering material, cages of netting inclosing the respective sections of filtering material interposed between said open sides, frames for supporting the cages, a suitable structure with cross-beams one of which is arranged lower than the other, the

lower frame resting upon said beams in an inclined position.

8. A head-gate provided with a filter composed of sections of filtering material, cages of netting inclosing the respective sections of filtering material interposed between said open sides, frames for supporting the cages, a suitable structure with cross-beams one of which is arranged lower than the other, the lower frame resting upon said beams in an inclined position, and gates in said structure for normally preventing the water from entering the structure except at the bottom and whereby the water may be allowed to flow through the sections along the line of the frames when said gates are opened to clean the filter.

9. A head-gate comprising a box having its under side open and submerged in the supplystream, and also having one side open to the ditch which is to carry off the water and being closed at the other lateral sides to the supply-stream, and a filter composed of one or more sections of filtering material submerged in the supply canal or river.

10. A head-gate comprising a box having its under side open and submerged in the supply-stream and also having one side open to the ditch which is to carry off the water and being closed at the other lateral sides to the supply-stream, a filter composed of one or more sections of filtering material submerged in the supply canal or river and suitable gates for allowing the water to flow therethrough in the supply-stream direction to clean the filter when the gates are open.

In testimony whereof I have hereunto set my hand, at San Francisco, California, this 31st day of October, 1904.

GEORGE W. DURBROW.

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